{"instruction": "You are an expert in event argument extraction. Please extract event arguments and their roles from the input that conform to the schema definition, which already includes event trigger words. If an argument does not exist, return NAN or an empty dictionary. Please respond in the format of a JSON string.", "schema": [{"event_type": "patch vulnerability", "arguments": ["releaser", "time", "issues addressed", "patch", "patch number", "supported platform", "common vulnerabilities and exposures", "vulnerable system", "vulnerable system version", "vulnerability"]}], "input": "Samba has released security updates addressing a possible avenue for DoS attacks and attackers changing administrator passwords ."}
{"patch vulnerability": [{"releaser": "Samba", "time": "NAN", "issues addressed": "NAN", "patch": "security updates", "patch number": "NAN", "supported platform": "NAN", "common vulnerabilities and exposures": "NAN", "vulnerable system": "NAN", "vulnerable system version": "NAN", "vulnerability": "NAN"}]}